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package filesys
import (
"context"
"fmt"
"github.com/chrislusf/seaweedfs/weed/filer"
"math"
"github.com/seaweedfs/fuse"
"github.com/seaweedfs/fuse/fs"
"github.com/chrislusf/seaweedfs/weed/glog"
"github.com/chrislusf/seaweedfs/weed/pb/filer_pb"
"github.com/chrislusf/seaweedfs/weed/util"
)
func (dir *Dir) Rename(ctx context.Context, req *fuse.RenameRequest, newDirectory fs.Node) error {
newDir := newDirectory.(*Dir)
newPath := util.NewFullPath(newDir.FullPath(), req.NewName)
oldPath := util.NewFullPath(dir.FullPath(), req.OldName)
glog.V(4).Infof("dir Rename %s => %s", oldPath, newPath)
// find local old entry
oldEntry, err := dir.wfs.metaCache.FindEntry(context.Background(), oldPath)
if err != nil {
glog.Errorf("dir Rename can not find source %s : %v", oldPath, err)
return fuse.ENOENT
}
// update remote filer
err = dir.wfs.WithFilerClient(func(client filer_pb.SeaweedFilerClient) error {
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
request := &filer_pb.AtomicRenameEntryRequest{
OldDirectory: dir.FullPath(),
OldName: req.OldName,
NewDirectory: newDir.FullPath(),
NewName: req.NewName,
Signatures: []int32{dir.wfs.signature},
}
_, err := client.AtomicRenameEntry(ctx, request)
if err != nil {
glog.Errorf("dir AtomicRenameEntry %s => %s : %v", oldPath, newPath, err)
return fuse.EXDEV
}
return nil
})
if err != nil {
glog.V(0).Infof("dir Rename %s => %s : %v", oldPath, newPath, err)
return fuse.EIO
}
err = dir.moveEntry(context.Background(), util.FullPath(dir.FullPath()), oldEntry, util.FullPath(newDir.FullPath()), req.NewName)
if err != nil {
glog.V(0).Infof("dir local Rename %s => %s : %v", oldPath, newPath, err)
return fuse.EIO
}
// change file handle
dir.wfs.handlesLock.Lock()
defer dir.wfs.handlesLock.Unlock()
inodeId := oldPath.AsInode()
existingHandle, found := dir.wfs.handles[inodeId]
glog.V(4).Infof("has open filehandle %s: %v", oldPath, found)
if !found || existingHandle == nil {
return nil
}
glog.V(4).Infof("opened filehandle %s => %s", oldPath, newPath)
delete(dir.wfs.handles, inodeId)
dir.wfs.handles[newPath.AsInode()] = existingHandle
return nil
}
func (dir *Dir) moveEntry(ctx context.Context, oldParent util.FullPath, entry *filer.Entry, newParent util.FullPath, newName string) error {
oldName := entry.Name()
if err := dir.moveSelfEntry(ctx, oldParent, entry, newParent, newName, func() error {
oldFsNode := NodeWithId(oldParent.Child(oldName).AsInode())
newFsNode := NodeWithId(newParent.Child(newName).AsInode())
newDirNode, found := dir.wfs.Server.FindInternalNode(NodeWithId(newParent.AsInode()))
var newDir *Dir
if found {
newDir = newDirNode.(*Dir)
}
dir.wfs.Server.InvalidateInternalNode(oldFsNode, newFsNode, func(internalNode fs.Node) {
if file, ok := internalNode.(*File); ok {
glog.V(4).Infof("internal file node %s", oldParent.Child(oldName))
file.Name = newName
file.id = uint64(newFsNode)
if found {
file.dir = newDir
}
}
if dir, ok := internalNode.(*Dir); ok {
glog.V(4).Infof("internal dir node %s", oldParent.Child(oldName))
dir.name = newName
dir.id = uint64(newFsNode)
if found {
dir.parent = newDir
}
}
})
if entry.IsDirectory() {
if err := dir.moveFolderSubEntries(ctx, oldParent, oldName, newParent, newName); err != nil {
return err
}
}
return nil
}); err != nil {
return fmt.Errorf("fail to move %s => %s: %v", oldParent.Child(oldName), newParent.Child(newName), err)
}
return nil
}
func (dir *Dir) moveFolderSubEntries(ctx context.Context, oldParent util.FullPath, oldName string, newParent util.FullPath, newName string) error {
currentDirPath := oldParent.Child(oldName)
newDirPath := newParent.Child(newName)
glog.V(1).Infof("moving folder %s => %s", currentDirPath, newDirPath)
var moveErr error
listErr := dir.wfs.metaCache.ListDirectoryEntries(ctx, currentDirPath, "", false, int64(math.MaxInt32), func(item *filer.Entry) bool {
moveErr = dir.moveEntry(ctx, currentDirPath, item, newDirPath, item.Name())
if moveErr != nil {
return false
}
return true
})
if listErr != nil {
return listErr
}
if moveErr != nil {
return moveErr
}
return nil
}
func (dir *Dir) moveSelfEntry(ctx context.Context, oldParent util.FullPath, entry *filer.Entry, newParent util.FullPath, newName string, moveFolderSubEntries func() error) error {
newPath := newParent.Child(newName)
oldPath := oldParent.Child(entry.Name())
entry.FullPath = newPath
if err := dir.wfs.metaCache.InsertEntry(ctx, entry); err != nil {
glog.V(0).Infof("dir Rename insert local %s => %s : %v", oldPath, newPath, err)
return fuse.EIO
}
if moveFolderSubEntries != nil {
if moveChildrenErr := moveFolderSubEntries(); moveChildrenErr != nil {
return moveChildrenErr
}
}
if err := dir.wfs.metaCache.DeleteEntry(ctx, oldPath); err != nil {
glog.V(0).Infof("dir Rename delete local %s => %s : %v", oldPath, newPath, err)
return fuse.EIO
}
return nil
}
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